JP4868129B2 - Tow angle variable device and toe angle / camber angle variable device - Google Patents

Description

  The present invention relates to a toe angle varying device that can greatly change the toe angle of a wheel with a simple structure and a toe angle / camber angle varying device that can also change a camber angle in addition to the toe angle varying device.

Conventionally, as shown in FIG. 15, in order to be able to control cambers and tows individually for each wheel by an actuator, a ball joint 33 for supporting an axle 32 for supporting a wheel at one point with respect to the vehicle body, First and second actuators 34 for supporting two points in the longitudinal direction of the vehicle, which are above and below the support point by the ball joint 33 in the axle 32, and individually displace these two support points in the vehicle width direction. , 35 and the two support points are relatively displaced in the vehicle width direction to change the wheel toe and / or the two support points are displaced in the same direction in the vehicle width direction. There is a control unit that controls the first and second actuators 34 and 35 so as to change the camber of the wheel (Patent Document 1).
JP 2004-122932 A

  However, in the general double wishbone and the invention of the above-mentioned Patent Document 1, if the toe angle is changed to about 90 degrees, the arms and wheels interfere with each other and the vehicle cannot be moved laterally. could not.

  In addition, when the support point of the upper link or lower link axle 32 is supported by the ball joint 33 at one point, the ball joint 33 at the support point is connected to the axle 32 and the first and second positions when the toe angle and the camber angle are changed. An arrangement in which the first and second actuators 34 and 35 move around the support point, and the heights of the first and second actuators 34 and 35 are different from each other. It becomes. That is, even if the lengths of the first and second actuators 34 and 35 are determined, neither the toe angle nor the camber angle is uniquely determined.

  The present invention solves the above-described problem, and a toe angle variable device having a simple structure capable of moving a vehicle in various directions as compared with the conventional one by changing the toe angle largely by an actuator. Another object of the present invention is to provide a tow angle / camber angle varying device that can also change the camber angle and a tow angle / camber angle varying device in which the toe angle / camber angle is uniquely determined with respect to the change of the actuator.

Therefore, the present invention includes a first arm member having one end connected to the vehicle body and the other end connected to a wheel side mounting member , one end connected to the vehicle body, and the other end connected to the wheel side second arm member mounting portion. A second arm member coupled to a wheel side mounting member, and a toe angle varying device that changes a toe angle of a wheel. A first actuator and a second actuator, a first connecting part connected to the other end of the first actuator, a second connecting part connected to the other end of the second actuator, and the attachment member. A pivot member that pivots about the toe angle pivot center together with the wheel, wherein the first coupling portion and the second coupling portion are each outside the space inside the wheel. disposed Rutotomoni, the first communication Part, the second connecting part, and the wheel side second arm member attaching part, when the wheel is in a state parallel to the vehicle body center line, the wheel is perpendicular to the wheel longitudinal section and the toe angle rotation center. When viewed from the direction, the wheel is placed in a position that is hidden by overlapping with the wheel, and the wheel is rotated until a line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line. In addition, the second arm member is disposed at a position where it does not interfere with the wheel.

  In the toe angle varying apparatus according to the present invention, the second arm member has a first main body and a second main body, one end of which is connected to the vehicle body and the other end of which is connected to the mounting member. Is rotated until the line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the plane is perpendicular to the vehicle body center line in the plane including the second arm member. The angle between the line passing through the wheel side second arm member mounting portion and the first main body is perpendicular to the vehicle body center line and passing through the wheel side second arm member mounting portion and the wheel side second arm member mounting It is larger than the angle between the part and the line which connects the said wheel inner side edge part, It is characterized by the above-mentioned.

  The first connecting portion and the second connecting portion are toe angle changing portions that rotate with respect to an axis parallel to a toe angle rotating center, and the rotating member attaching portion includes the first connecting portion and the second connecting portion. It is a camber angle changing part which rotates with respect to another axis | shaft which does not cross | intersect the rotation axis in said 2nd connection part.

Furthermore, the toe angle varying device of the present invention includes a first arm member and a second arm member, one end of which is connected to the vehicle body and the other end of which is connected to a wheel side mounting member, and the toe angle of the wheel is changed. In the variable angle device, the first arm member is connected to the vehicle body at one end, and a first actuator and a second actuator that can change a length, and a first connecting portion connected to the other end of the first actuator, A rotation member that includes a second connection portion connected to the other end of the second actuator and a rotation member attachment portion connected to the attachment member, and rotates around the toe angle rotation center together with the wheel. And the first connecting part and the second connecting part are each arranged outside the space inside the wheel, and a line perpendicular to the toe angle rotation center in the wheel longitudinal section is the vehicle body center line. Rotate until it is vertical In this case, the second arm member is disposed at a position where it does not interfere with the wheel, and the second arm member has a first body and a second body, one end of which is connected to the vehicle body and the other end is connected to the mounting member. A plane including the second arm member when the wheel is rotated until a line perpendicular to a toe angle rotation center in the longitudinal section of the wheel is perpendicular to a vehicle body center line. The angle between the first body and the line passing through the wheel side second arm member mounting portion perpendicular to the vehicle body center line is perpendicular to the vehicle body center line and passing through the wheel side second arm member mounting portion. It is larger than an angle between a line connecting the wheel side second arm member mounting portion to the wheel inner end portion .

Accordingly, the present invention includes a first arm member having one end connected to the vehicle body and the other end connected to a wheel side mounting member , one end connected to the vehicle body, and the other end connected to the wheel side second arm member mounting portion. And a second arm member coupled to the wheel side mounting member , wherein the first arm member has one end coupled to the vehicle body and has a length. A first actuator and a second actuator that can be changed, a first connection portion connected to the other end of the first actuator, a second connection portion connected to the other end of the second actuator, and a connection to the mounting member A pivot member that pivots about the toe angle pivot center together with the wheel, wherein the first coupling portion and the second coupling portion are respectively in-wheel spaces. Rutotomoni disposed outside, the first The connecting portion, the second connecting portion, and the wheel side second arm member mounting portion are configured so that the wheel is perpendicular to the wheel longitudinal section and the toe angle rotation center when the wheel is in a state parallel to the vehicle body center line. When viewed from a different direction, the wheel is disposed at a position hidden by overlapping with the wheel, and the wheel is rotated until a line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line. In this case, since the second arm member is disposed at a position where it does not interfere with the wheel, the toe angle of the wheel can be changed to the vehicle body width direction, and the vehicle can be propelled in all directions.

  In the toe angle varying device, the second arm member has a first main body and a second main body, one end of which is connected to the vehicle body and the other end of which is connected to the mounting member. When rotating until the line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the wheel side is perpendicular to the vehicle body center line in the plane including the second arm member. The angle between the line passing through the second arm member mounting portion and the first main body is from the line passing through the wheel side second arm member mounting portion perpendicular to the vehicle body center line and the wheel side second arm member mounting portion. Since it is larger than the angle between the line connecting to the inner end of the wheel, the toe angle of the wheel can be changed to the vehicle body width direction with a simple structure, and the vehicle can be propelled in all directions.

  Further, in the toe angle / camber angle varying device including the toe angle varying device, the first connecting portion and the second connecting portion are toe angle changing portions that rotate about an axis parallel to a toe angle rotation center. The rotating member mounting portion is a camber angle changing portion that rotates with respect to another axis that does not intersect with the rotation axis at the first connecting portion and the second connecting portion, so that the camber angle is changed. This enables various control over the behavior of the vehicle.

The first arm includes a first arm member and a second arm member, one end of which is connected to the vehicle body and the other end of which is connected to a wheel side mounting member, and the toe angle changing device for changing the toe angle of the wheel. One end of the member is connected to the vehicle body, the length of the first actuator and the second actuator can be changed, the first connecting portion connected to the other end of the first actuator, and the other end of the second actuator A second connecting portion that is connected to the mounting member, and a rotating member that rotates about the toe angle rotation center together with the wheel. And the second connecting portion are disposed outside the space inside the wheel, respectively, and the wheel is rotated until a line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line. The second arm part Is disposed at a position where it does not interfere with the wheel, and the second arm member has a first body and a second body, one end of which is connected to the vehicle body and the other end of which is connected to the mounting member. Is rotated until the line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the plane is perpendicular to the vehicle body center line in the plane including the second arm member. The angle between the line passing through the wheel side second arm member mounting portion and the first main body is perpendicular to the vehicle body center line and passing through the wheel side second arm member mounting portion and the wheel side second arm member mounting Since it is larger than the angle between the part and the line connecting the inner end of the wheel, the toe angle of the wheel can be changed to the vehicle body width direction with a simple structure, and the vehicle can be propelled in all directions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which an embodiment of a toe angle varying device 1 is applied to a vehicle. In FIG. 1, 1 is a toe angle varying device, 2 is a vehicle body, 3 is a mounting member, 4 is a wheel, 5 is a tire, 10 is an upper arm as an example of a first arm member, 11 is a first actuator, and 12 is a first actuator. Two actuators, 13 a rotation member, 14 a first actuator support, 15 a second actuator support, 16 a first connection, 17 a second connection, 18 a rotation member attachment, and 20 a first Lower arm as an example of a two-arm member, 21 is a first lower arm body as a first body, 22 is a second lower arm body as a second body, 23 is a coupling member, 24 is a first lower arm support, and 25 is a second A lower arm support portion 26 is a wheel side lower arm attachment portion.

  The toe angle varying device 1 has an upper arm 10 and a lower arm 20, both of which are connected so that one end swings to the vehicle body 2, and the other end is connected to a mounting member 3 on the wheel 4 side. The wheel 4 and the tire 5 mounted around the wheel 4 are supported so as to rotate.

  The upper arm 10 includes a first actuator 11, a second actuator 12, and a rotating member 13. The first actuator 11 is connected and supported to the vehicle body 2 by a universal joint having a vertical rotation shaft and a horizontal rotation shaft at the first actuator support portion 14 at one end, and a rotation member at the first connection portion 16 at the other end. 13 is a member that is connected to 13 and can be expanded and contracted. The second actuator 12 is connected and supported to the vehicle body 2 by a universal joint having a vertical rotation shaft and a horizontal rotation shaft at the second actuator support portion 15 at one end, and a rotation member at the second connection portion 17 at the other end. 13 is a member that is connected to 13 and can be expanded and contracted. Although the first actuator support 14 and the second actuator support 15 are universal joints, they may be ball joints. The rotating member 13 is a member having a substantially triangular shape, and is connected to the other end of the first actuator 11 by the first connecting portion 16 in the vicinity of the first apex, and is in the vicinity of the second apex. The second connecting part 17 is connected to the other end of the second actuator 12 so as to rotate, and is connected to the attaching member 3 on the wheel 4 side by a rotating member attaching part 18 near the third vertex. In addition, the rotation member attaching part 18 does not necessarily need to be on the toe angle rotation center line.

  The lower arm 20 includes a first lower arm main body 21 on the front side of the vehicle, a second lower arm main body 22 on the rear side of the vehicle, and a coupling member 23 that couples the first lower arm main body 21 and the second lower arm main body 22 and is substantially inclined. It is integrally formed in the shape of A shape. The first lower arm main body 21 on the front side of the vehicle is connected to the vehicle body 2 at one end so as to swing by the first lower arm support portion 24 and attached at the other end so that the wheel 4 rotates at the wheel side lower arm attachment portion 26. It is attached to the member 3. Further, the second lower arm main body 22 on the vehicle rear side is connected to the vehicle body 2 at one end so as to swing by the second lower arm support portion 25, and the wheel 4 is rotated at the wheel side lower arm mounting portion 26 at the other end. Are attached to the attachment member 3. The wheel side lower arm attachment portion 26 is configured by a ball joint or the like. The coupling member 23 may be omitted if there is no problem in strength.

  FIG. 2 is a conceptual diagram of the toe angle varying device 1 of the present embodiment. 2A is a view of the toe angle varying device 1 as viewed from the rear side of the vehicle, and FIG. 2B is a view of a cross section including the lower arm 20 of the toe angle varying device 1 as viewed from the lower side of the vehicle. In the figure, O is the wheel center, OT is the toe angle rotation center, H1 is the distance from the wheel center O to the rotating member mounting portion 18, H2 is the distance from the wheel center O to the lower arm mounting portion 26, and R is the wheel inner diameter. , A is a wheel longitudinal section including a toe angle rotation center OT, B is a wheel rotation center, C is a wheel inner end, S is a wheel inner space, and W is a wheel longitudinal section A to a wheel inner end C. The distance, Wu, is the distance from the wheel longitudinal direction cross section A to the first connecting part and the second connecting parts 16, 17. For convenience, the upper arm 10 is indicated by a two-dot chain line.

  FIG. 2A is a view of the toe angle varying device 1 as seen from the vehicle rear side. However, for the sake of convenience, the attachment member 3, the wheel 4, and the tire 5 are shown in a wheel longitudinal direction cross section including the toe angle rotation center OT. As shown in FIG. 2A, the upper arm 10 and the lower arm 20 connect the vehicle body 2 and the mounting member 3. The upper arm 10 is supported by the vehicle body 2 at one end, and is attached to the attachment member 3 at the rotation member attachment portion 18 separated by a distance H1 above the wheel center O at the other end. The lower arm 20 is supported by the vehicle body 2 at one end, and is attached to the attachment member 3 at the lower arm attachment portion 26 that is separated from the wheel center O by a distance H2 at the other end.

  FIG. 2B is a view of a cross section including the lower arm 20 of the toe angle varying device 1 as seen from the vehicle lower side. As illustrated in FIG. 2B, the upper arm 10 and the lower arm 20 extend from the vehicle body 2 so as to be inclined outward and forward of the vehicle, and support the attachment member 3, the wheel 4, and the tire 5. The first connecting portion 16 and the second connecting portion 17 are disposed outside the wheel interior space S.

  FIG. 3 is a conceptual diagram of the toe angle varying device 1 according to the present embodiment. A line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A is perpendicular to the vehicle body center line from the state of FIG. The state rotated until it becomes is shown. 3A is a view of the toe angle varying device 1 as seen from the vehicle rear side, and FIG. 3B is a view of a cross section including the lower arm 20 of the toe angle varying device 1 as seen from the vehicle lower side. In the figure, D is the distance from the lower arm mounting part 26 to the inner diameter part of the wheel in the plane including the lower arm 20, and θ1 is a line perpendicular to the vehicle body center line and passing through the lower arm mounting part 26 in the plane including the lower arm 20. An angle between the lower arm body 21 and θ2 is a line that passes through the lower arm mounting portion 26 and is perpendicular to the vehicle body center line in a plane including the lower arm 20, and a line that connects the lower arm mounting portion 26 to the wheel inner end C. The angle between. For convenience, the upper arm 10 is indicated by a two-dot chain line.

FIG. 3A is a view of the toe angle varying device 1 as seen from the vehicle rear side. As shown in FIG. 3A, when the distance from the lower arm mounting portion 26 to the wheel inner diameter portion in the plane including the lower arm 20 is D, D = √ (R ² −H ^{2 2} ).

  FIG. 3B is a view of a cross section including the lower arm 20 of the toe angle varying device 1 as seen from the vehicle lower side. As shown in FIG. 3B, in order to rotate the wheel 4 until the line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A becomes perpendicular to the vehicle body center line, the plane 4 including the lower arm 20 is included. , The angle θ1 between the longitudinal section A including the toe angle rotation center OT of the wheel 4 and the first lower arm main body 21 is equal to the longitudinal section A including the toe angle rotation center OT of the wheel 4 and the wheel 4. It is set to be larger than the angle θ2 between the lower arm attachment portion 26 and the line connecting the wheel inner end portion C.

By setting in this way, even if the toe angle of the wheel 4 is rotated until the line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A is perpendicular to the vehicle body center line, the lower arm 20 and the wheel 4 are arranged without interference. Note that θ2 = tan ⁻¹ (W / D). Further, the distance Wu from the longitudinal section A including the toe angle rotation center OT of the wheel 4 to the upper arm attachment portions 16 and 17 is determined from the longitudinal section A including the toe angle rotation center OT of the wheel 4 to the inner end of the wheel. It is set to be larger than the distance W to the part C. By setting in this way, even if the toe angle of the wheel 4 is rotated until the line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A is perpendicular to the vehicle body center line, the upper arm 10 and There is no interference with the wheel 4.

  Next, each state will be described with reference to FIGS. FIG. 4 shows a normal running state. In the normal state, the wheels 4 and the tires 5 are directed substantially parallel to the vehicle traveling direction. In some cases, the toe angle and the camber angle may be adjusted. FIG. 5 shows a state in which the toe angle of the wheel 4 is rotated about 90 degrees in the toe-in direction until a line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A is perpendicular to the vehicle body center line. In order to make this state, the first actuator 11 is contracted and the second actuator 12 is extended from the normal state of FIG. Then, the rotation member 13 rotates about the rotation member attachment part 18, and the attachment member 3, the wheel 4, and the tire 5 rotate accordingly. At this time, since the angle of the first lower arm main body 21 of the lower arm 20 is set so as not to interfere with the wheels 4, the toe angle can be greatly changed to about 90 degrees. FIG. 6 shows a state in which the toe angle is rotated in the toe-out direction opposite to that in FIG. In order to achieve this state, the first actuator 11 is extended and the second actuator 12 is contracted from the normal state of FIG. Then, the rotation member 13 rotates about the rotation member attachment part 18, and the attachment member 3, the wheel 4, and the tire 5 rotate accordingly. At this time, the toe angle can be changed to an angle at which the second lower arm body 22 of the lower arm 20 and the wheel 4 do not interfere with each other.

  Next, the structure which can be rotated in the direction which changes a camber angle is applied to the rotation member attachment part 18 and the wheel side lower arm attachment part 26 of the toe angle varying apparatus 1, and not only the toe angle but also the wheel 4 and the tire 5 are applied. A second embodiment of the tow angle / camber angle varying device 100 for changing the camber angle will be described.

  7 and 8, a pin or the like is applied to the rotating member attaching portion 18, and the wheel side lower arm attaching portion 26 is constituted by a ball joint or the like. Thereby, the attachment member 3, the wheel 4 and the tire 5 are axes different from the toe angle rotation center OT by the rotation member attachment portion 18 and the wheel side lower arm attachment portion 26. It can be rotated with respect to an axis that does not intersect the rotation axis at the two connecting portions 17.

  Therefore, when both the first actuator 11 and the second actuator 12 are contracted, the camber angle is changed to an eight-shaped negative camber direction when viewed from the front of the vehicle as shown in FIG. When 12 extends together, the camber angle is changed to a reverse camber-shaped positive camber direction as seen from the front of the vehicle as shown in FIG.

  Although the actuator is applied to the upper arm 10 in the first and second embodiments, the actuator may be applied to the lower arm 20 as shown in FIG. 9 as a third embodiment.

  Furthermore, in the first and second embodiments, the toe angle of the wheel 4 is rotated about 90 degrees until the line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A becomes perpendicular to the vehicle body center line. In the fourth embodiment, as shown in FIG. 10, the tow angle / camber angle varying device 1 is installed upside down with respect to the vehicle body 2 as shown in FIG. 10, and the toe angle of the wheel 4 is set to the longitudinal direction of the wheel 4 in the toe out direction. A structure that can rotate about 90 degrees until a line perpendicular to the toe angle rotation center OT in the directional section A is perpendicular to the vehicle body center line may be adopted.

  Moreover, you may implement as a new form combining each of 1st embodiment thru | or 4th embodiment.

  Further, in the present embodiment, the attachment member 3 is simply a member for attaching the upper arm 10 and the lower arm 20, but a structure for driving the wheels 4 as drive means such as a motor may be used. With such a structure, it is possible to use either a driven wheel or a driving wheel.

  According to the embodiment as described above, the toe angle of the wheel 4 can be rotated by about 90 degrees with a simple structure until the line perpendicular to the toe angle rotation center OT in the wheel longitudinal section A is perpendicular to the vehicle body center line. The vehicle can be propelled in all directions. Further, by adopting a structure in which the camber angle can be changed, various controls can be performed on the behavior of the vehicle.

  Next, an axis passing through the first connecting portion 16 and an axis passing through the second connecting portion 17 shown in FIGS. 11 and 12 are used as axes for changing the toe angle, and an axis passing through the rotating member attaching portion 18 is used. The technique used as the axis for changing the camber angle will be described in comparison with the prior art in which ball joints are applied to the first connecting part 16 and the second connecting part 17 shown in FIGS. 13 and 14, respectively.

  13 and 14 are diagrams schematically showing a conventional technique in which a ball joint is applied to the first connecting portion 16 and the second connecting portion 17, respectively. In order to facilitate understanding, the same reference numerals as those in the present embodiment are used. 13A is a view of the toe angle / camber angle varying device 1 as viewed from above the vehicle, and FIG. 13B is a cross section including the lower arm 20 of the toe angle / camber angle varying device 1 from the vehicle rear side. FIG. 14 (a) is a view of the toe angle / camber angle varying device 1 as seen from the side of the vehicle, FIG. 14 (b) is an operational view of FIG. 14 (a), and FIG. 14 (c). These show the figure which looked at the state of Drawing 14 (b) from the vehicles back side.

  In the toe angle / camber angle varying device 1 shown in FIG. 13, ball joints are applied to the first connecting portion 16 and the second connecting portion 17, respectively. In this embodiment, when the toe angle and the camber angle are changed, the ball joints of the first connecting portion 16 and the second connecting portion 17 are the wheel side turning member 13, the vehicle body side first actuator 11 and the second actuator, respectively. 12 and the rotation fulcrum. That is, an axis for changing the toe angle and an axis for changing the camber angle intersect on the first connecting portion 16 and the second connecting portion 17.

  Then, the toe angle / camber angle varying device 1 in the state shown in FIG. 14 (a) has an axis X perpendicular to the longitudinal section of the wheel passing through the wheel side lower arm mounting portion 26, as shown in FIG. 14 (b). Therefore, the upper arms 10 are arranged at different heights as shown in FIG. 14C. That is, even if the lengths of the first actuator 11 and the second actuator 12 are determined, neither the toe angle nor the camber angle is uniquely determined.

  Next, the technique of this embodiment will be described. As shown in FIGS. 11 and 12, the shaft for changing the camber angle is applied to the rotating member attaching portion 18, and the shaft for changing the toe angle is applied to the first connecting portion 16 and the second connecting portion 17. Apply each. 11A is a view of the toe angle / camber angle varying device 1 as viewed from above the vehicle, and FIG. 11B is a cross section including the lower arm 20 of the toe angle / camber angle varying device 1 from the vehicle rear side. FIG. 12A is a view of the toe angle / camber angle varying device 1 viewed from the side of the vehicle, and FIG. 12B is an operation diagram of FIG.

  In the toe angle / camber angle varying device 1 shown in FIG. 11, the shaft passing through the first connecting portion 16 and the shaft passing through the second connecting portion 17 are used as shafts for changing the toe angle, respectively, and the rotating member mounting portion An axis passing through 18 is an axis for changing the camber angle. In this embodiment, when changing the toe angle and the camber angle, the shafts for changing the toe angles of the first connecting part 16 and the second connecting part 17 are the wheel side turning member 13 and the vehicle body side first member, respectively. The shaft for changing the camber angle of the rotation member mounting portion 18 is a rotation fulcrum between the wheel side mounting member 3 and the vehicle body side rotation member 13. It becomes. That is, the axis for changing the toe angle and the axis for changing the camber angle do not intersect.

  Then, the toe angle / camber angle varying device 1 in the state shown in FIG. 12 (a) has an axis X perpendicular to the longitudinal section of the wheel passing through the wheel side lower arm mounting portion 26 as shown in FIG. 12 (b). Therefore, a restraining force is generated and the axis X does not move. That is, if the lengths of the first actuator 11 and the second actuator 12 are determined, both the toe angle and the camber angle are uniquely determined.

  The axis passing through the first connecting part 16 and the axis passing through the second connecting part 17 are used as axes for changing the toe angle, and the axis passing through the rotating member mounting part 18 is changed as the camber angle. The structure of the toe angle / camber angle varying device 1 serving as a shaft for performing the operation can be applied regardless of the angles of the upper arm 10 and the lower arm 20.

  Thus, the 1st connection part 16 and the 2nd connection part 17 serve as a toe angle change part which rotates to an axis parallel to the toe angle rotation center, and the rotation member attachment part 18 and the wheel side lower arm attachment part 26 are The camber angle changing unit that is a shaft different from the toe angle rotation center and that rotates with respect to an axis that does not intersect the rotation axis of the first connection unit 16 and the second connection unit 17 is applied. Thus, if the lengths of the first actuator 11 and the second actuator 12 are determined, both the toe angle and the camber angle are uniquely determined.

The figure which shows 1st embodiment of this invention Schematic diagram of toe angle variable device Schematic of changing toe angle of toe angle variable device The figure which shows the normal time of the toe angle variable device Diagram showing toe angle change of toe angle variable device Diagram showing toe angle change of toe angle variable device The figure which shows 2nd embodiment of this invention The figure which shows 2nd embodiment of this invention The figure which shows 3rd embodiment of this invention The figure which shows 4th embodiment of this invention Diagram showing axes for changing toe angle / camber angle Diagram showing axes for changing toe angle / camber angle The figure which shows the prior art for comparing with FIG. The figure which shows the prior art for comparing with FIG. Diagram showing conventional technology

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Toe angle variable device, 2 ... Vehicle body, 3 ... Mounting member, 4 ... Wheel, 5 ... Tire, 10 ... Upper arm (1st arm member), 11 ... 1st actuator, 12 ... 2nd actuator, 13 ... times Moving member, 14 ... first actuator supporting portion, 15 ... second actuator supporting portion, 16 ... first connecting portion, 17 ... second connecting portion, 18 ... rotating member mounting portion, 20 ... lower arm (second arm member) , 21 ... first lower arm main body (first main body), 22 ... second lower arm main body (second main body), 23 ... coupling member, 24 ... first lower arm support part, 25 ... second lower arm support part, 26 ... wheel side Lower arm mounting portion, O ... wheel center, OT ... toe angle rotation center, H1 ... distance from wheel center O to rotating member mounting portion 18, H2 ... distance from wheel center O to lower arm mounting portion 26, R ... wheel Inner diameter, A ... C: Wheel longitudinal direction cross section including angle rotation center OT, B: wheel rotation center, C: wheel inner end, S: wheel inner space, W: distance from wheel longitudinal direction cross section A to wheel inner end C, Wu ... distance from the longitudinal section A of the wheel to the upper arm attachment parts 16, 17, D ... distance from the lower arm attachment part 26 to the wheel inner diameter part in the plane including the lower arm 20, θ1 ... in the plane including the lower arm 20, An angle between a line perpendicular to the vehicle body center line and passing through the lower arm attachment portion 26 and the first lower arm main body 21, θ2... A line perpendicular to the vehicle body center line and passing through the lower arm attachment portion 26 and the lower arm in a plane including the lower arm 20 Angle between the connecting portion 26 and a line connecting the wheel inner end C, X: an axis passing through the wheel side lower arm mounting portion 26 and perpendicular to the longitudinal section of the wheel

Claims (4)

A first arm member having one end connected to the vehicle body and the other end connected to a wheel side mounting member ;
A second arm member having one end connected to the vehicle body and the other end connected to the wheel side mounting member at the wheel side second arm member mounting portion;
In a toe angle varying device that changes the toe angle of a wheel,
The first arm member is
A first actuator and a second actuator, one end of which is connected to the vehicle body and capable of changing a length;
A first connecting portion connected to the other end of the first actuator, a second connecting portion connected to the other end of the second actuator, and a rotating member attaching portion connected to the attaching member, A rotating member that rotates about the toe angle rotation center together with the wheel;
Have
It said first connecting portion and the second connecting portion is disposed outside of the wheel space respectively Rutotomoni,
The first connecting portion, the second connecting portion, and the wheel-side second arm member mounting portion are configured so that the wheel is in a wheel longitudinal section and a toe angle rotation center when the wheel is in a state parallel to a vehicle body center line. When viewed from a direction perpendicular to the wheel, it is arranged at a position where it overlaps with the wheel and is hidden,
When the wheel is rotated until the line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the second arm member is disposed at a position that does not interfere with the wheel. A toe angle varying device characterized by that. The second arm member has a first body and a second body, one end of which is connected to the vehicle body and the other end of which is connected to the mounting member.
When the wheel is rotated until a line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the vehicle body center line is within the plane including the second arm member. The angle between the vertical line passing through the wheel side second arm member mounting portion and the first body is perpendicular to the vehicle body center line and passing through the wheel side second arm member mounting portion and the wheel side second arm. The toe angle varying device according to claim 1, wherein the toe angle varying device is larger than an angle between a member connecting portion and a line connecting the wheel inner end portion. Wherein the first connecting portion及beauty second connection portion is a toe angle changing unit which rotates relative to an axis parallel to the center toe angle rotation,
The rotating member mounting portion is a camber angle changing portion that rotates with respect to another axis that does not intersect the rotation axis of the first connecting portion and the second connecting portion. A toe angle / camber angle varying device including the toe angle varying device according to claim 2. In a toe angle varying device that includes a first arm member and a second arm member, one end of which is connected to the vehicle body and the other end of which is connected to a wheel side mounting member, and changes the toe angle of the wheel.
The first arm member has one end connected to the vehicle body, the length of the first actuator and the second actuator being changeable, the first connecting portion connected to the other end of the first actuator, and the second actuator A second connecting portion connected to the other end, and a rotating member attaching portion connected to the attaching member, and a turning member that turns around the toe angle turning center together with the wheel,
The first connection part and the second connection part are each arranged outside the space in the wheel,
  When the wheel is rotated until the line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the second arm member is disposed at a position that does not interfere with the wheel. ,
The second arm member has a first body and a second body, one end of which is connected to the vehicle body and the other end of which is connected to the mounting member.
When the wheel is rotated until a line perpendicular to the toe angle rotation center in the longitudinal section of the wheel is perpendicular to the vehicle body center line, the vehicle body center line is within the plane including the second arm member. The angle between the vertical line passing through the wheel side second arm member mounting portion and the first body is perpendicular to the vehicle body center line and passing through the wheel side second arm member mounting portion and the wheel side second arm. It is larger than the angle between the line connecting the member mounting part to the wheel inner end part.
A toe angle varying device characterized by that.

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